Displaying items by tag: threads

October 18, 2018 - New PEM® PreTect™ thread masking plugs from PennEngineering® will protect internal threads of self-clinching nuts and standoffs during paint and powder coating processes. The pre-installed silicone masking plugs – supplied already in place – have been designed for self-clinching blind standoffs, thru-hole standoffs, and nuts in thread sizes #4-40 to ¼-20 and M3 to M6. Plugs can be augmented for thru-hole fastener types with a specially engineered stretched polyester film offering thread protection on the side opposite the plug. Plugs and film can be removed easily using a fine tip tool when processes are completed.

All self-clinching fasteners provide permanent and reusable load-bearing threads in metal sheets too thin to be tapped or where extruded or stamped threads would be impractical. Usually installed during the fabrication process – before an assembly would undergo painting or powder coating – self-clinching fasteners become integral components. The new plugs and film ensure that paints or powder coatings will not impact the thread integrity of installed fasteners as assemblies move through production.

The plugs and film can reduce labor requirements by eliminating any need to manually mask fastener threads in advance of coating processes or subsequently clean contaminated threads. They have been engineered to withstand temperatures up to 482ºF and 250ºC and fasteners with the feature can be installed automatically to achieve additional production economies.

July 10, 2018 - ATLAS® SpinTite® blind threaded inserts from PennEngineering®, Danboro, Pennsylvania, provide strong, permanent, and reusable threads in thin sheet materials where only one side is accessible for hardware installation. Installation is performed from the accessible “front” side using spin-spin tooling technology. The inserts then become permanently mounted on the “back” side to accept a mating screw for final component attachment. The “blind” installation capability especially suits applications such as tubing, extrusions, and others where access to the back side is either limited or nonexistent.

These steel, aluminum, brass, or stainless steel inserts ideally replace tapped holes, weld nuts, rivets, self-drilling or tapping screws, and through-bolted applications necessitating loose hardware. They support close-to-edge applications and can be installed at any stage during the production process (even after assemblies have been painted). In service, the inserts exhibit high thread strength and high torque-out resistance.

ATLAS SpinTite inserts have been designed for use with panels or sheets of any hardness or material (including metal, plastics, and fiberglass) and as thin as .020” / 0.51mm. They additionally can assemble multiple dissimilar materials during installation, eliminating any need to perform spot welding or other secondary operations, saving time and money during production.

This family of inserts includes half-hex shank low-profile head, rib-wall minimized-profile head, rib-wall low-profile head, thin-wall low-profile head, and swaging low-profile head versions. A variety of available thread sizes range from #6-32 to 1/2”-13 and M4 to M12, depending on insert type. Custom inserts also can be engineered to satisfy specific application performance requirements.

PennEngineering
Danboro, Pennsylvania
800/237-4736